Top Theory on Moon's Formation Might Have No Evidence After All

[Portre]

Billions of years ago, so the theory goes, something around the size of Mars smacked into Earth, spewing a whole bunch of dirt into space that eventually coalesced to form the Moon.

This is called the giant impact hypothesis, and it gives us a neat explanation for a few curious properties that Earth and the Moon have in common, like identical minerals.

There's just one problem. According to a new analysis led by planetary scientist Paolo Sossi of the Experimental Planetology group at ETH Zürich in Switzerland, we have absolutely no unambiguous evidence that such a giant impact ever took place.

Top Theory on Moon's Formation Might Have No Evidence After All

[Ell]

Interesting.

I predict that the other large moons and perhaps also outliers such as Pluto have the same isotopic distribution?